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40세 이상 여성에서 우울, 스트레스와 건강행동 및 대사증후군의 관련성
전진혁,김성희 한국모자보건학회 2012 한국모자보건학회지 Vol.16 No.2
Objectives: In this study, the relationship between psychologic factors (depression and stress) and health behaviors, metabolic syndrome were evaluated. Methods: The study population was 1,559 women, aged over 40 years, April to December in 2009. We used modified National Cholesterol Education Program Adult Treatment Panel-III (modified NCEP ATP-lll) criteria for metabolic syndrome, Center for Epidemiologic Studies-Depression scale (CES-D) for depression and Psychosocial Wellbeing Index-Short Form (PWI-SF) for stress. Analysis of covariance (ANCOVA) were used to compare the mean scores of depression, stress by the number of metabolic syndrome components present. Logistic regression analyses were used to explore the variables associated with depression, stress, health behaviors and metabolic syndrome. Results: The prevalence of depression, stress and metabolic syndrome were 18.8%, 15.8%, 22.1%. Metabolic syndrome and negative health behaviors were more frequently observed in depressed and stressed groups. CES-D and PWI-SF scores increased with the number of components metabolic syndrome present. After covariates (age, education) adjusted, the odds ratios of bad health behaviors with depression and stress were 1.67 (95% CI=1.21~2.28) and 2.77 (95% CI=1.15~ 2.55). After covariates (age, education, BMI, smoking, drinking, exercise) adjusted, the odds ratios of metabolic syndrome with depression and stress were 1.48 (95% CI=1.07~2.06) and 1.75 (95 % CI=1.23~2.48). Conclusion: Depression and stress were independently associated with health behaviors and metabolic syndrome.
전진혁,한기보,박노국,이종대,류시옥,이태진 한국공업화학회 2004 응용화학 Vol.8 No.1
At Hot gas desulfurization, which is one of the unit process for Integrated coal Gasification Combined Cycle(IGCC) system, SO₂ was generated in the regeneration process of sorbents. SO₂ is a major atmospheric pollutant causing various ecological damages and health problems. Direct sulfur recovery process(DSRP) is the catalytic reduction of SO₂ to elemental sulfur by a reductant gas such as CO, H_(z) or CH₄. In this work, the optimization of reaction condition such as the reaction temperature, space velocity and CO/SO₂ molar ratio in DSRP was performed. Sn-Zr compound was used as catalyst in DSRP. Especially, in this process, at low temperature of 598 K, elemental sulfur yield was very high. Generally, DSRP was performed at high temperature above 673 K. Therefore, this process has many advantage from the viewpoint of economy.
Cu-Ce계 촉매에 의한 선택적 CO 산화 반응에 관한 연구
박종원,전진혁,윤왕래,이영우 한국공업화학회 2002 응용화학 Vol.6 No.2
Cu-Ce/Al_2O_3 catalysts promoted with 3d-group transition metals have been prepared and tested for selective oxidation of CO in a H_2-rich stream. The effects of reaction temperature, process parameter(λ), promotor content upon both activity and selectivity have been investigated. Also, the presence of CO_2 and H_2O in the reactant feed on the activity and selectivity of catalysts were examined. Among the Cu-Ce based catalysts, Cu-Ce/A1_2O_3 promoted with 0.2wt% Co gave the highest activity(>T_99) and selectivities(55-100%) under wide temperature windows(150-220℃).
산화칼슘이 첨가된 ZnO/Natural-zeolite/Fe2O3 탈황제의 내마모성특성 연구
정용길,전진혁,류시옥,박노국,이태진,이종대 한국에너지학회 2004 에너지공학 Vol.13 No.1
본 연구에서는 ZZF 탈황제의 내마모성을 개선하기 위하여 산화칼슘함량을 1, 3, 5, 10 wt% 정도 첨가한 탈황제를 제조하여 마모실험을 수행하였다. 마모실험전과 후의 탈황제 형상을 SEM으로 관찰하고 입자크기분포를 쿨터계수기로 측정하였다. 산화칼슘을 첨가하지 않은 ZZF 탈황제의 마모도는 AI=28.3%, CAI=10.8% 정도였다. CaO 함량이 3 wt%인 ZZFCa-3 탈황제의 마모도(AI=17.3%, CAI=8.8%)가 가장 낮았다. ZZFCa-3 탈황제가 입자모양과 평균입도가 잘 유지되었다. ZZFCa-3 탈황제의 황화 및 재생실험을 수행하였다. 석탄가스 중의 10000 ppm 수준의 H2S를 1 ppm 이하로 정제할 수 있었으며, 탈황제의 황수용능력은 최대 28.8 g S/100 g sorbent 정도 유지되었다. 재생된 탈황제의 XRD분석에서 CaSO4의 생성은 관찰되지 않았으며, 황화반응에서도 SO2 slippage가 관찰되지 않았다. 이러한 결과로 국내 고유 기술에 의한 반응성, 내구성, 내마모성이 모두 만족되는 고온건식 탈황제를 개발할 수 있었다.
The Study on the Selective Oxidation of H2S over the Mixture Zeolite NaX-WO3 Catalysts
이태진,전진혁,박노국,류시옥,Jun-Hyun Pi,Dong-Hwal Lee,Jong-Dae Lee 한국화학공학회 2004 Korean Journal of Chemical Engineering Vol.21 No.1
At temperatures lower than 250oC the deactivation of zeolite NaX catalyst occurred in the presence ofwater vapor. The gradual accumulation of water vapor on the surface of catalyst could cause deactivation of catalyst.The zeolite NaX-WO3 catalysts were prepared to study a method preventing deactivation of catalysts from the ad-sorption of water vapor. The zeolite NaX-WO3 (9 : 1) with a low content of WO3 showed the highest conversion ofH2S. It is believed that the addition of WO3 caused either a decrease of the strong adsorption of water vapor on thezeolite NaX or an increase of the reducibility of WO3 by some interactions between zeolite NaX and WO3.